datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,03 0:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,03 1:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,03 2:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,03 3:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,03 4:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,03 5:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,03 6:30:00,27 ,       0,4.800189,0.523537,0.974226
sgpcmbeC1.c1,2007,03 7:30:00,27 ,0.202551,51.13868,14.49556,10.77371
sgpcmbeC1.c1,2007,03 8:30:00,26 ,0.347237,86.18208,41.44445,25.45959
sgpcmbeC1.c1,2007,03 9:30:00,28 ,1.544467,115.4119,66.24836,37.62981
sgpcmbeC1.c1,2007,0310:30:00,28 ,1.007554,140.1441,87.92245,45.66534
sgpcmbeC1.c1,2007,0311:30:00,28 ,2.032209,158.6737,102.2697,53.63109
sgpcmbeC1.c1,2007,0312:30:00,28 ,4.053818,157.5175,108.8946,52.44736
sgpcmbeC1.c1,2007,0313:30:00,28 ,3.873106,152.1162,103.9505,53.80007
sgpcmbeC1.c1,2007,0314:30:00,28 ,1.384845,138.5903,94.02066,45.74572
sgpcmbeC1.c1,2007,0315:30:00,28 , 0.58862,115.9022,82.97364,34.77981
sgpcmbeC1.c1,2007,0316:30:00,29 ,1.634359,79.96204,53.88606,27.15354
sgpcmbeC1.c1,2007,0317:30:00,29 ,0.416857,48.60021,25.97688,12.66389
sgpcmbeC1.c1,2007,0318:30:00,29 ,       0,12.72292,  2.9243,2.475124
sgpcmbeC1.c1,2007,0319:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0320:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0321:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0322:30:00,26 ,       0,0.009192,0.000354,0.001803
sgpcmbeC1.c1,2007,0323:30:00,26 ,       0,       0,       0,       0